Contents
Flocking and Annual Cycle of the Pinon Jay, Gymnorhinus Cyanocephalus
Russell P. Balda and Gary C. Bateman
Song Variations and Singing Behavior in the Rufous-sided Towhee, Pipilo Erythrophthalmus Oregonus
Donald E. Kroodsma
Feeding Activity and Color Preference of Ruby-throated Hummingbirds
Richard S. Miller and Richard Elton Miller
Temperature Relationships and Nesting of the Calliope Hummingbird
William A. Calder
New Records and Zoogeographical Notes on the Birds of St. Lawrence Island, Bering Sea
Spencer G. Sealy, Jean Bedard, Miklos D. Udvardy, and Francis H. Fay
Breeding Biology of a Small Colony of Western Gulls (larus Occidentalis Wymani) in California
Charles A. Harper
Man's Influence on Hybridization in Two Avian Species in South Dakota
Bertin W. Anderson
News and Notes
The Condor
Publications Received
The Condor
The Bulletin Board
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Water Deprivation and Use of Sodium Chloride Solutions by Vesper Sparrows (pooecetes Gramineus)
Robert D. Ohmart and E. Linwood Smith
Shell Thinning in Eggs of the Common Murre, Uria Aalge, from the Farallon Islands, California
Franklin Gress, Robert W. Risebrough, and Fred C. Sibley
Food Habits of the Starling in Eastern Texas
Dennis N. Russell
No Evidence for Incubation Patch Changes in Mourning Doves throughout Reproduction
Brian Maridon and Larry C. Holcomb
The Status of Carpodacus Mcgregori
Joseph R. Jehl Jr.
A Technique for Performing Laparotomy on Small Birds
Arthur C. Risser Jr.
Important Birds from Blue Point Cottonwoods, Maricopa County, Arizona
R. Roy Johnson and James M. Simpson
Spruce Grouse Copulation
Harold J. Harju
Pellet Regurgitation by Captive Sparrow Hawks (falco Sparverius)
Thomas G. Ballgooyen
First Nesting Record for the Frigatebird (fregata Minor) in the Main Hawaiian Islands
Robert J. Shallenberger and J. Peterson Myers